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Figure 1 Individual (circles) and mean group (lines) values of plasma levels of (A) C‐reactive protein (CRP), (B) tumour necrosis factor‐α (TNFα) and (C) interleukin‐6 (IL‐6) in patients with chronic obstructive pulmonary disease (COPD, n = 15; closed circles) and healthy age‐matched subjects (n = 10; open circles).
